I am grateful to the following people for help with this book:
Governor Pete Wilson of California; Jonathan R. Wilcox, deputy director, Office of Public Affairs, Office of Governor Pete Wilson; Andrew Poat, chief deputy director, Department of Transportation;
Mark D. Zoback, professor of geophysics, chairman, Department of Geophysics, Stanford University;
In the San Francisco field office of the FBI: Special Agent George E. Grotz, director of press relations and public affairs, who opened many doors; Special Agent Candice DeLong, profiling coordinator, who generously spent much time helping me with the details of an agent’s life and work; Bob Walsh, special agent in charge; George Vinson, assistant special agent in charge; Charles W. Matthews III, associate special agent in charge; Supervising Special Agent John Gray, crisis management coordinator; Supervising Special Agent Don Whaley, chief division counsel; Supervising Special Agent Larry Long, Tech squad; Special Agent Tony Maxwell, evidence response team coordinator; Dominic Gizzi, administrative officer;
In the Sacramento field office of the FBI: Special Agent Carole Micozzi; Special Agent Mike Ernst;
Pearle Greaves, computer specialist, Information Resources Division, FBI headquarters;
Sierra County sheriff Lee Adams;
Lucien G. Canton, director, Mayor’s Office of Emergency Services, San Francisco;
James F. Davis, Ph.D., California State geologist; Ms. Sherry Reser, information officer, Department of Conservation;
Charles Yanez, manager, South Texas, Western Geophysical; Janet Loveday, Western Geophysical; Rhonda G. Boone, manager, corporate communications, Western Atlas International; Donnie McLendon, Western Geophysical, Freer, Texas; Mr. Jesse Rosas, bulldozer driver;
Seth Rosing DeLong;
Dr. Keith J. Rosing, director of emergency services, Irvine Medical Center;
Brian Butterworth, professor of cognitive neuropsychology, University College, London.
Most of the above were found for me by Dan Starer, of Research for Writers, New York City.
As always, my outlines and drafts were read and criticized constructively by my agent, Al Zuckerman; my editors, Ann Patty in New York and Suzanne Baboneau in London; and numerous friends and relatives, including George Brennan, Barbara Follett, Angus James, Jann Turner, and Kim Turner.